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ls1046a using emmc as boot source

Question asked by jingjia shi on Feb 15, 2020
Latest reply on Feb 15, 2020 by ufedor

hi

In  my coustom board,I use emmc/sd as boot source.but i don't use SDHC_CD_B pin.it always floating.my board is refer to ls1046ardb board.

Now I can boot from sd card ,but i can't boot from emmc.

why I can boot from sd? the SDHC_CD_B pin is floating  And Why I can't boot from emmc,Is it because PBL has special regulations for this pin?

in spec,when use sdhc as boot source, SDHC_CD_B pin be serve as the SDHC_CD_B pin for the eSDHC controller. This happens automatically when the microSD card is selected as the boot source for the board.

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